a negative trendP = 0.0585
Using the cleaned data in the full‐channel montage, we found a negative relationship between delta power and fine motor skills ( R 2 = 0.9026, P < 10 −3 , β = −11.91 [SE 3.15]) and receptive communication ( R 2 = 0.8559, P = 0.0302, β = −6.36 [SE 2.90]), and a negative trend between delta power and expressive communication ( R 2 = 0.6823, P = 0.0585, β = −4.58 [SE 2.40]).